Figure 7.
The HPLC analysis chromatograms of OY, OY-A and OY-B. (A) 280 nm and (B) 335 nm; Increased peaks (1-5) were not identified; 1. tR 4.11 min; 2. tR 6.17 min; 3. tR 9.13 min; 4. tR 11.50 min; 5. tR 12.03 min.
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